The tumbler that actually stays cold and doesn't leak in your bag.

Stanley took their legendary vacuum insulation and built a flip-straw tumbler that solves the two things every other one gets wrong: lukewarm drinks by noon and wet backpacks. Double-wall vacuum insulation keeps ice frozen for hours (not just "cool"—actually cold), and the flip straw locks tight so you can toss it in a gym bag without second-guessing.

Why this beats your current tumbler:

• Flip straw that seals (no more checking if you closed it properly)
• Actually stays cold for 8+ hours (not marketing BS—Stanley's been doing this since 1913)
• Fits in car cup holders AND treadmill holders (handle folds down flat)
• 30 oz capacity (full water bottle replacement, fewer refills)
• Made from recycled ocean plastics (if you care about that, cool; if not, it's still durable as hell)

The Seafoam Stripe colorway: Soft mint green with retro stripes—coastal vibes without being overtly "beachy." Clean enough for the office, chill enough for weekend errands. The kind of color that works year-round and doesn't scream "I bought this for summer and now it's fall."

What makes Stanley different: They've been making vacuum-insulated gear for over 110 years—thermoses that kept coffee hot in coal mines, canteens that went to war, coolers that outlasted trucks. This isn't a trendy brand that figured out insulation last year. The double-wall tech is tested, proven, and borderline overbuilt. Your drink stays the temperature you want it, period.

Real-world use: Morning coffee stays hot through your commute. Ice water stays frozen through a full workout. Iced coffee doesn't turn into lukewarm sadness by 11am. Toss it in a backpack, gym bag, or car without worrying about leaks. The flip straw makes one-handed drinking easy (clutch for driving or mid-workout).

The handle: Folds down when you don't need it, flips up for carrying. Fits standard cup holders when folded. Makes it easier to grab from a bag. Small detail, big difference.

Eco angle (if you care): Made partly from recycled fishing nets pulled from the ocean. Still just as durable as virgin plastic—you're not sacrificing quality for sustainability. If you don't care about the environmental part, that's fine—it's still a tank.

Specs:

• 30 oz capacity (roughly 4 cups)
• 18/8 stainless steel (doesn't rust, doesn't retain flavors)
• BPA-free everything
• Dishwasher safe (top rack)
• Double-wall vacuum insulation
• Leak-resistant flip straw

Condition: Brand new, sealed. Original Stanley packaging.

Ships same or next day from Florida.